That friends of the late Jim Brady will gather tonight to celebrate his life at the Blue Parrot in East Hampton, where the Korean War vet, author and former editor of Page Six raised many bottles of Pacifico . . . That Ronald Lauder sold his Hamptons mansion at 165 Main St. in Wainscott — part of a family compound — to his daughter, Aerin, for the very specific price of $5,261,730, reports The Post’s Jennifer Gould Keil . . . That Yankee outfielder Brett Gardner stopped by to sign autographs and get a shave at Lab Series’ pop-up store on East 42nd Street.